Attachment for mechanically agitating ice cream while being frozen in home freezers



June 5, 1951 F. A. ANDERSON 2,555,624

ATTACHMENT FOR MECHANICALLY AGITATING ICE CREAM WHILE BEING FROZEN IN HOME FREEZERS Filed Aug. 11, 1948 IN V EN TOR. 1. A. A/VflERJON ATTORNEY Patented June 5, 1951 TATING ICE CHE AM WHILE BEING ROZE IN HO RE Z S I Frank A. Anderson, Portland, Oreg. nn ieatiq Au u t 3. Se al N 435 3 3 Claims.

This invention relates generally to refrigerathe class described in which thedevice may be attached to or built into a Deep Freeze unit.-

I accomplish these and other objects in the manner set forth in the followin specification as illustrated in the accompanying drawing, n which:

Fig. 1 is a vertical section through one form of t e dev Fig. 2 is a bottom View 2-2 in Fig. 1.

Fig. 3 is a perspective view of the locking device.

Fig. 4 is a fragmentary section through a modified form of the device.

Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawing, there is shown the cover ID of a common form of freezing cabinet such as is ordinarily employed for storing frozen foods in the home. Through the cover I extends a tubular shaft II on whose lower end is secured a fan I2. On the upper end of the tubular shaft II is secured a collar I3 by means of a setscrew I4. On the collar I3 is formed a pinion I5 which meshes with a gear I6 on the shaft I1 which journals in the bearings I8 supported by the housing I9. Also secured on the shaft I! is a bevel gear which meshes with the bevel pinion 2| on the stub shaft 22 which is carried by the housing I9 and the bracket 23. The stub shaft 22 is provided with the slotted end 24 into which extends the tongue 25 of the shaft 26 of the drive motor 21 which is mounted on the plate 28 which rests on the cover I0 and is held in place by means of the clamp 29 or in any other convenient manner.

On the shaft I1 is also secured a pinion 3B which meshes with the gear 3| secured on the shaft 32 which passes through the tubular shaft II and its end 33 extends below the fan I2. The purpose of this arrangement, of course, is merely to provide a higher speed for the fan I2 than is imparted to the agitator shaft 34 and end 35 which is drivably connected to the shaft 32.

Underneath the cover I 0 is secured a ring 36 having the depending arms 31 whose ends 38 are inturned as shown in Fig. 3. Beneath the ends 38 is disclosed a circular band 39 to Which is attached the upright hooks 40 which can engage the ends 38 and support the band 39 if taken along the line properly turned or can be released therefrom by rotatingthe band 39 in the opposite direction. The container 4| is of any desired size and is provided with the outturned flange 42 at its open end upon which rests the cover 43 provided with a gasket 44 and secured thereto by means of the bolts 45.

In the middle of the cover 43 is a bearing 46 within which journals the overlapping ends 33 and 35 cf the shafts 32 and 34 respectively. The shaft 34 journals in the bottom 4] of the container ti and carries thereon the plates and 49, between which is mounted the agitator pivot 55 upon which journals the agitatorblade frame 5| which supports the blades 52.

Surrounding the container 4| and. spaced therefrom by means of the radial fins .53 is the cylindrical casing .54. The container 4|, the casing 54 and the fins53 form a plurality ofair conducting channels 55 around the container 4|. Extending downwardly from the band 39 are the inturned arms 56 which support the flange 42 of the container 632. A band clamp 51 is placed around the bell-shaped end 58 of the casing 54 and a second band clamp 59 is placed around the depending arms 31. These serve to insure all of the intake of the fan I2 passing upwardly through the channels 55.

A deflector disk 60 is placed around the shaft II to guide the air from the fan I2 outwardly in the direction indicated by the arrows 6|.

The operation of this form of the device is as follows: A quantity of ice cream mix is placed in the container 4| which is then put into place and held there by rotation until the parts assume the position shown in Fig. 3. The cover I0 is then lowered, moving the entire container into the freezing compartment 62 beneath the cover I0 and the motor 21 operated which, through the reduction gearing 20 and 2|, causes the agitator shaft 35 to revolve at the proper mixing speed while, through the over-drive gears I5 and I6 causes the fan I2 to revolve at a speed in excess of that of the motor 21.

Since heat from the mix within the container 4| is rapidly conducted to the fins 53, it follows that the large capacity of the freezer can be utilized to quickly carry away this heat, thereby producing a compact, fast operating and efficient form of home freezer.

In the form of the device shown in Fig. 4, the motor 65 is mounted on a vertical axis and its shaft 66 is drivably connected to the shaft 61 which journals in the housing 68 on top of the cover 69. and in the bearing ill on the under side of the cover 69. Also extending through the cover 69 is the agitator shaft l! which journals in the bearings 12 and i3 and has rotatably mounted thereon a driven pinion 14 to which mixing form and modifications is attached a hub 15 and the fan 16. On the shaft 61 is secured a gear 11 which meshes with the pinion M, thereby producing an over-drive between the motor 65 and the fan 16. Within the housing 98, and secured on the shaft 61, is a pinion 18 which meshes with the gear 19 on the counter shaft 80. On the counter shaft 80 is a pinion 8| which meshes with a gear secured on the agitator shaft 1|, thereby producing a reduction in speed from the motor 65 to one which is satisfactory for the agitator shaft H.

The two forms of the device are identical in principle but differ mainly in the motor mounting and the details of the gearing.

I am aware that numerous forms of ice cream machines have been constructed in the past. I, therefore, do not intend to cover such devices broadly but I do intend to cover all such thereof as fall fairly within the appended claims.

I claim:

1. An ice cream freezing unit having in combination a container having a plurality of ducts formed around the exterior suspending said container within a freezing cabinet, a fan for drawing air upwardly through said ducts and means for agitating the mix within said container.

2. An apparatus of the class described, the combination of a container having means for mounting same on the under side of a refrigerator cover, an electric motor mounted on the outside of said cover, an agitator inside said container drivable from said motor and a fan for thereof, means of circulating cold air from said refrigerator iri contact with said container, characterized by having the agitator geared below motor speed and the fan geared above motor speed.

3. An apparatus of the class described, consisting of a cylindrical container adapted to be removably mounted within a refrigerator in a manner to extend into the freezing compartment thereof, an electric motor associated with said container, a transmission driven by said motor having two power take-offs, one of which is driven above motor speed and the other below motor speed, an agitator in said container driven by the slow speed take-off, a fan driven by said high speed take-off and a plurality of airducts formed around said container through which'air can be circulated from said freezing compartment along the exterior of said container.

FRANK A. ANDERSON.

REFERENCES orrsn The following references are of record in the file of this patent:

UNITED STATES PATENTS 

